Answers
Answer:
im not 100 percent sure but i think its
140 inches squared
Step-by-step explanation:
Related Questions
The amount that households pay service providers for access to the Internet varies quite a bit, but the mean monthly fee is $50 and the standard deviation is $20. The distribution is not Normal: many house- holds pay a low rate as part of a bundle with phone or television service, but some pay much more for Inter- net only or for faster connections.
A sample survey asks an SRS of 50 households with Internet access how much they pay. Let x be the mean amount paid.
(a) Explain why you can't determine the probability that the amount a randomly selected household pays for access to the Internet exceeds $55.
(b) What are the mean and standard deviation of the sampling distribution of ?
(c) What is the shape of the sampling distribution of x? Justify your answer.
(d) Find the probability that the average fee paid by the sample of households exceeds $55. television service, but some pay much more for Inter- net only or for faster connections.
Answers
Answer:
(a) See Explanation
(b) [tex]\bar x =50[/tex] and [tex]\sigma_x = 0.8944[/tex]
(c) The shape is normal
(d) [tex]P(\bar x > 55) = 0[/tex]
Step-by-step explanation:
Given
[tex]\mu = \$50[/tex] -- mean
[tex]\sigma = \$20[/tex] --- standard deviation
[tex]n=500[/tex] --- sample size
Solving (a): The reason we can't determine the probability that an amount to access internet by a household will exceed $55.
The question says that a lot of households pay low rates, but the percentage of the households in this category is not given. This means that it is impossible to determine the shape of the distribution.
Hence, the probability cannot be calculated.
Solving (b): Sample mean and Sample standard deviation
The sample mean estimates the population mean
So:
[tex]\bar x =\mu[/tex]
[tex]\bar x =50[/tex]
The sample standard deviation is calculated as thus:
[tex]\sigma_x = \frac{\sigma}{\sqrt n}[/tex]
[tex]\sigma_x = \frac{20}{\sqrt{500}}[/tex]
[tex]\sigma_x = \frac{20}{22.36}[/tex]
[tex]\sigma_x = 0.8944[/tex]
Solving (c): The shape of the distribution.
We have:
[tex]n = 500[/tex] --- The sample size
According to Central limit theorem, When the sample size is greater than 30, then the shape of the distribution is normal.
Hence, the shape is normal
Solving (d): [tex]P(\bar x \ge 55)[/tex]
Calculate the test statistic (t)
[tex]t = \frac{\bar x - \mu}{\sigma}[/tex]
[tex]t = \frac{55 - 50}{0.8945}[/tex]
[tex]t = \frac{5}{0.8945}[/tex]
[tex]t = 5.590[/tex]
So:
[tex]P(\bar x > 55) = P(t > 5.590)[/tex]
Referencing the z table, we have:
[tex]P(t > 5.590) = 0[/tex]
Hence:
[tex]P(\bar x > 55) = 0[/tex]
Calculate the quotient below. Enter your answer in lowest terms, using the
slash mark (/) for the fraction bar.
Answers
Answer: 8/11
Step-by-step explanation:
Pls help I’ll brainlest
Answers
Answer:
d. 15
Step-by-step explanation:
3 styles x 5 toppings = 15 one-topping options
What is the area of a triangle with base 10 cm and height 17 cm
Answers
Answer:
85 cm
I have to use 20 characters to answer so extra space here :/
If f(x) = -3x - 5 and g(x) = 4x - 2, find (f+ g)(x).
O A. (f+ g)(x) = -x + 3
O B. (f+ g)(x) = x - 7
O c. (f+ g)(x) = -7x-3
O D. (f+ g)(x) = 7x - 7
Answers
Answer:
B
Step-by-step explanation:
you are just combining like terms since you are adding the equations together
(-3x-5) + (4x-2)
-3x + 4x = x
-5 + -2 = -7
so altogether
x -7
a bag contains red counters and blue counters only. number of red counters : number of blue counters = 3:4
Answers
Answer:
3/4
Step-by-step explanation:
In order to determine her pulse rate, Michaela's nurse counted 24 beats in 15 seconds.
At this rate, how many beats would she have in 60 seconds?
Answers
Question 17 of 25
Which of the following is not a valid probability?
O A. 0
B. 0.002
O c. 1.2
D. 1
Answers
9514 1404 393
Answer:
C. 1.2
Step-by-step explanation:
A probability is always in the range 0 to 1, inclusive. The value 1.2 cannot be a probability.
Pls help me out I’m very confused
Answers
Answer:
7
Step-by-step explanation:
C= 2 pi r
14 pi= 2 pi r
7=r
NEED HELP WITH MATH
Answers
9514 1404 393
Answer:
A. g(x) = √(x -5), x ≥ 5
Step-by-step explanation:
You can use the definition of an inverse function to solve for g(x).
x = f(g(x))
x = (g(x))^2 +5
x -5 = (g(x))^2 . . . . . subtract 5
√(x -5) = g(x) . . . . . take the square root
The radical contents cannot be negative, so this is only defined for x-5 ≥ 0, or x ≥ 5.
g(x) = √(x -5), x ≥ 5
HELP M,E PLEASE ILL GIVE YOU BRAINLIEST
;
=
Answers
Answer:
Step-by-step explanation: sure i could help you what type is it im a fresh man but im learning softmore stuff
based on the scatter plot, which is the best prediction of the total number of pages in a book with 4 chapters?
a.) 120
b.) 90
c.) 150
d.) 140
Answers
Answer 90
Step-by-step explanation:
Answer:A-120
Step-by-step explanation:
A 16 1/2 km stretch of road needs repairs. Workers can repair 2 1/4 km of road per week. How many weeks will it take to repair this stretch of road?
Answers
Answer:
7 1/3 weeks
Step-by-step explanation:
Divide 16 1/2 km by (2 1/4 km/wk). We get:
16.5 km
--------------------- = 7 1/3 weeks
2.25 km/wk
Follow the steps for dividing decimals. Then, round to two decimal places (hundredths).
1.476)6.380
Answers
Answer:
4.32
Step-by-step explanation:
The steps required are:
4.322
1.476 )6.380
5.904
____
0.476
0.4763
0.4428
_____
0.0335
0.03358
0.02952
_____
0.00406
0.004060
0.002952
_____
0.0011080
Therefore, the answer is 4.32.
Luke was asked to compute the length of AB. What is Luke's error?
Answers
Answer:
uh......
Step-by-step explanation:
Answer:
Luke used the formula for arc length for central angles or arc measures in degrees, but the diagram gives the central angle in radians.
Step-by-step explanation:
took the thing
Find the length of a picture frame whose width is 3 inches and whose proportions
are the same as a 9-inch wide by 12-inch long picture frame.
o 6 inches
O 36 inches
o 4 inches
o 21 inches
Answers
the length of the frame is 21 inches.
If two coins are tossed what is the probability that the first one will show heads and the second coin will show tails
Answers
Answer:
2/4 which simplifies to 1/2
which angle you flip it and how much force you use
The cost of three cans of pineapple at the grocery outlet is $2.25 on the cost of six cans of the same kind of pineapple is $4.80 at save market which store has a better price for pineapple grocery outlet or save market
Answers
Answer:
save market has a better price.
Step-by-step explanation:
2.25÷ 3= 0.75
4.80÷6= 0.8
A grocery store recently sold 10 cartons of yogurt, of which 5 were raspberry. What is the experimental probability that the next carton of yogurt sold will be raspberry?
Answers
Answer:
Step-by-step explanation:
10/16
What is the perimeter of this polygon? (Geometry)
Answers
Answer:
30 cm
Step-by-step explanation:
k+5,-1 and 2k are consecutive terms of an arithmetic sequence.
1.find k
2.find the terms.
Answers
Answer:
K enejwjwjenenw
Step-by-step explanation:
Serey mejw catttsn keesuyboard
The wholesales price of a basket ball was $10.00. The store marked it up an additional 120%. What was the sale price?
Answers
Answer:
22 dollars
Step-by-step explanation:
it starts at 100 percent so if it is marked up a additional 120 percent then it is 220 percent.
22/10*10=22
Which of the following graphs could be a representation of a geometric
sequence?
Answers
Answer:
Third one
Step-by-step explanation:
In geometric sequence, the graph must have one slope
The graphs could be a representation of a geometric
sequence are given by option (A), option (B) and option (D)
What is a geometric sequence?"It is a sequence in which the ratio between consecutive terms is equal."
For given question,
We need to identify the graphs that could be a representation of a geometric sequence.
A sequence [tex]a_1,a_2,...,a_n[/tex] is geometric sequence if [tex]\frac{a_2}{a_1}=r[/tex],
[tex]\frac{a_3}{a_2}=r[/tex],. . ., [tex]\frac{a_n}{a_{n-1}} = r[/tex]
This means, for geometric sequence the number being multiplied each time is constant.
And the geometric sequence is of the form
[tex]a_1,(a_1r),(a_1r^2),...[/tex]
If we graph the geometric sequence then it would be non-linear.
From above pattern of geometric sequence, we can say that the graph of the geometric sequence is exponential in nature.
Therefore, the graphs could be a representation of a geometric
sequence are given by option (A), option (B) and option (D)
Learn more about the geometric sequence here:
https://brainly.com/question/11266123
#SPJ2
1 ) Ms. Allgood donated 63 books to her class. She would like to provide an equal number of books to each of her 9 students.
Answers
Answer:
7
Step-by-step explanation:
Answer: 7
Step-by-step explanation: 63 divided by 9 is 7, so Ms. Allgood can give all her 9 students 7 books each
What mistake did Fumio make? He did not distribute the 2 to both components of vector u. He added vectors v and w before distributing the –3 to their components. He subtracted vector w from vector v. He did not use the associative property correctly when rearranging the signs.
Answers
Answer: A
Step-by-step explanation:
Answer:
Option A; He did not distribute the 2 to both components of vector u.
Step-by-step explanation:
edge 2022 :-)
Which is the same as moving the decimal point 3 to the right in a decimal number
Answers
How long it will take 2000$ to double if it is invested at 6% interest compounded semi annually
Answers
Answer:
Step-by-step explanation:
The function g(x) is a transformation of the quadratic parent function, f(x)
What function is g(x)?
Answers
Answer:
Option A.
Step-by-step explanation:
The parent function is the quadratic function, that is:
[tex]f(x) = x^2[/tex]
Function g:
The function g is the function f concave down, that is, -f.
Also, for the parent function, we have that y = 1 when x = 1. On the function g, otherwise, we have that when x = 1, y = -1/3. So:
[tex]g(x) = -\frac{1}{3}f(x) = -\frac{1}{3}x^2[/tex]
The correct answer is given by option A.
-3x^2
just did it and it’s correct. Your welcome <3
Which of the following describes the polynomial function?
Answers
Answer:
I think it is option C.
if i am right plz give me brainliest!
please help!! thanks!!
Answers
Answer:
_________(ANSWER)_________
1.(C)
2.(D)
3.(B)
4.(A)
6.(D)
Explanation:
(BRAINLEIST PLEASE)❤☺️☻♨️♨️☻☺️❤